How can determine presence of Oxylinkage present in a given oxygen acids?

Condition of presence of Oxylinkage in oxyacids:

If the calculated /average oxidation state of central atom of Oxy acid/oxy anion ,Oxide having two or more central atom is found to be one of its common  oxidation state , then Oxy linkage will be present.

For example:

H₆P₄O₁₃: calculated oxidation state is = +5

Common oxidation state of "P" is = +3, +5

It means calculated oxidation state matches with one of the common oxidation state so there are Oxy linkage present in H₆P₄O₁₃.

 

Note: this rule is not applicable for H₂N₂O₂ Hyponitrous acid, H₂S₂O₃ Thiosulphuric acid and H₂S₂O₅ Disulphurous acid or Pyrosulphurous acid.

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